4278312173281 has 2 divisors, whose sum is σ = 4278312173282. Its totient is φ = 4278312173280.

The previous prime is 4278312173263. The next prime is 4278312173339. The reversal of 4278312173281 is 1823712138724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3999300030625 + 279012142656 = 1999825^2 + 528216^2 .

It is a cyclic number.

It is not a de Polignac number, because 4278312173281 - 2⁷ = 4278312173153 is a prime.

It is a super-2 number, since 2×4278312173281² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4278312173221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139156086640 + 2139156086641.

It is an arithmetic number, because the mean of its divisors is an integer number (2139156086641).

Almost surely, 2^{4278312173281} is an apocalyptic number.

It is an amenable number.

4278312173281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278312173281 is an equidigital number, since it uses as much as digits as its factorization.

4278312173281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 49.

The spelling of 4278312173281 in words is "four trillion, two hundred seventy-eight billion, three hundred twelve million, one hundred seventy-three thousand, two hundred eighty-one".